Patents by Inventor Frank B. Stone

Frank B. Stone has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Golf putter head
    Patent number: D271604
    Type: Grant
    Filed: June 11, 1981
    Date of Patent: November 29, 1983
    Assignee: Frank B. Stone
    Inventors: Frank B. Stone, Robert L. Hatcher